<template>
	<view>
	  <view class="search-box">
	  	<uni-search-bar @input="input" :radius="100" :cancelButton="auto" focus ></uni-search-bar>
	  </view>
	  <!-- 搜索列表 -->
	  <view class="sugg-list" v-if="searchResults.length !== 0">
	    <view class="suggh-item" v-for="(item, index) in searchResults" :key="index" @click="gotoDetail(item.goods_id)">
	      <view class="goods-name">{{ item.goods_name }}</view>
        <uni-icons type="arrowright" size="16"></uni-icons>
	    </view>
	  </view>
    <!-- 搜索历史 -->
    <view class="history-box" v-else>
      <!-- 标题区域 -->
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17" @click="cleanHistory"></uni-icons>
      </view>
      <!-- 列表区域 -->
      <view class="history-list">
       <uni-tag :text="item" v-for="(item, index) in historys" :key="index" @click="gotoGoodsList(item)"></uni-tag>
      </view>
    </view>
  </view>
</template>

<script>
	export default {
		data() {
			return {
				timer: null,
        kw: '',
        searchResults: [],
        historyList: []
			};
		},
    onLoad() {
      this.historyList =  JSON.parse(uni.getStorageSync('kw') || '[]')
    },
    computed: {
      historys() {
        return [...this.historyList].reverse()
      }
    },
    methods: {
      input(e) {
        clearTimeout(this.timer)
        this.timer = setTimeout(() => {
          this.kw = e
          this.getSearchList()
        }, 800)
      },
      async getSearchList() {
        if(this.kw.trim() === '') {
          this.searchResults = []
          return
        }
        const { data } = await uni.$http.get('/goods/qsearch', {query: this.kw})
        this.searchResults = data.message
        this.saveSearchHistory()
      },
      gotoDetail(ids) {
        uni.navigateTo({
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + ids
        })
      },
      saveSearchHistory() {
        // this.historyList.unshift(this.kw)
        const set = new Set(this.historyList)
        set.delete(this.kw)
        set.add(this.kw)
        this.historyList = Array.from(set)
        uni.setStorageSync('kw', JSON.stringify(this.historyList))
      },
      cleanHistory() {
        this.historyList = []
        uni.setStorage('kw', '[]')
      },
      gotoGoodsList(item) {
        uni.navigateTo({
          url: '/subpkg/goods_list/goods_list?query=' + item
        })
      }
    }
 }
</script>

<style lang="scss">
.search-box {
  position: sticky;
  top: 0;
  z-index: 999;
}
.sugg-list {
  padding: 0 5px;
  .suggh-item {
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    .goods-name {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-right: 3px;
    }
  }
}

.history-box {
  padding: 0 5px;
    .history-title {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 40px;
      font-size: 13px;
      border-bottom: 1px solid #efefef;
    }
    .history-list {
      display: flex;
      flex-wrap: wrap;
      .uni-tag {
            margin-top: 5px;
            margin-right: 5px;
          }
    }
  }
</style>
